| 摘要 |
PROBLEM TO BE SOLVED: To interpolate a spectrum which is deleted when coding, without feeling insufficiency and sense of incongruity, when compressed digital audio data are decoded. SOLUTION: The digital audio data decoding device 2 decodes spectrum data which are quantized and coded for each frequency band based on an index which is set for each frequency band. The digital data decoding device 2 includes an interpolation processing section 25 for interpolating the spectrum data of the frequency band in which quantization bit allocation is zero, by using the spectrum data existing in the frequency band in which the quantization bit allocation is non-zero. COPYRIGHT: (C)2007,JPO&INPIT
|
